Add ignored tests for cases we don't know how to fix

Author: samblackburn

Tests/DelegatesTests.cs

@@ -7,10 +7,26 @@ namespace Tests;
 internal class DelegatesTests : TestMethods
 {
     [Test]
-    public void Delegate()
+    public void DelegateWithOneArgument()
     {
         var referenced = "public delegate bool MyDelegate(int i);";
         var referencing = Class("MyDelegate MakeDelegate() => i => i > 3;", "ReferencingClass");
         ContractAssertionShouldCompile(referencing, referenced);
     }
-}
+
+    [Test, Ignore("Not sure how to infer the delegate's signature")]
+    public void DelegateWithTwoArguments()
+    {
+        var referenced = "public delegate bool MyDelegate(int i, int j);";
+        var referencing = Class("MyDelegate MakeDelegate() => (i, j) => i > j;", "ReferencingClass");
+        ContractAssertionShouldCompile(referencing, referenced);
+    }
+
+    [Test, Ignore("Not sure how to infer the delegate's signature")]
+    public void VoidDelegate()
+    {
+        var referenced = "public delegate void MyDelegate(int i);";
+        var referencing = Class("MyDelegate MakeDelegate() => i => {};", "ReferencingClass");
+        ContractAssertionShouldCompile(referencing, referenced);
+    }
+}